A new condensing reagent, 1-(2,4,6-triisopropylbenzenesulfonyl)-5-(pyridin-2-yl)tetrazolide and its use in the synthesis of λ cro binding heptadecanucleotide on a polymer support

摘要

A new condensing reagent 1 -(2,4,6-triisoprophylbenzenesulfonyl)-5-(pyridin-2-y1)tetrazolide (TPSPy) was found to give one diastereoisomer of dinucleoside monophosphate aryl esters. Several oligodeoxynucleotide blocks were prepared using this reagent. A heptadecanucleotide .dTATCCCTTGCGGTGATA, which had the same sequence as the λ cro binding DNA sequence was synthesized by condensing mono-, tri- and dodecanucleotide blocks using this reagent on a polystyrene support.